Know For Sure
- ವರ್ಷ: 1941
- ದೇಶ: United States of America
- ಪ್ರಕಾರ: Drama
- ಸ್ಟುಡಿಯೋ: Research Council of Academy of Motion Picture Arts and Sciences, United States Public Health Service
- ಕೀವರ್ಡ್: syphilis
- ನಿರ್ದೇಶಕ: Lewis Milestone
- ಪಾತ್ರವರ್ಗ: Ward Bond, Joseph Crehan, Samuel S. Hinds, Tim Holt, Edwin Maxwell, Etta McDaniel